Feature request: Status labels / tags on conversation threads

Currently, conversations can be pinned or organized into projects, but there's no way to mark a thread's status (e.g. active, stalled, archived, reference). For users who run many parallel workflows across projects, the conversation list becomes hard to navigate — you can't tell at a glance which threads are live vs. dead without opening them.

Request: allow users to assign a status tag or label to any conversation thread (something like Active / Stalled / Reference / Closed). These could show as a small badge on the thread and be filterable. Renaming threads manually as a workaround works but is tedious.